A coronary stent is a small, mesh tube that is inserted into a blocked coronary artery to help keep it open. It is used to treat coronary artery disease and chest pain (angina).Some key points about coronary stents:- Stents are tiny, expandable metal meshes usually made of stainless steel or other a

The permanence of airway stents depends on the type of stent used:- Metal stents (e.g. nitinol, stainless steel) are considered permanent implants. They are not typically removed unless there are complications. The stents stay in the airway for the remainder of the patient's life.- Silicone stents n